Triangle Math Practice

According to the Triangle Sum Theorem, what is the sum of all three angles in a triangle?

Mathematical Equivalence

OFF

According to the Linear Pair Postulate, two angles that form a straight line have a sum of ____.

Mathematical Equivalence

ON

According to the Exterior Angle Theorem, a lone exterior angle of a triangle is equal to the two remote angles (angles inside the triangle that it is not adjacent to).

• True

• False

Which of the following is false?

• A triangle can be drawn with 3 acute angles.

• A triangle can be drawn with 2 obtuse and one acute angles.

• A triangle can be drawn with only one obtuse angle and two acute angles.

• A triangle can be drawn with only one right angle and two acute angles.

Which of the following angles can you add together to equal angle d? 

• Angle a and Angle b
• Angle b and Angle c
• Angle a and Angle c
• Angle a and Angle b and Angle c

If one angle in a triangle is 40, and another angle is 60, what is the value of the third angle?

Mathematical Equivalence

ON

If one angle in a triangle is 50, and another angle is 70, what is the value of the third angle?

Mathematical Equivalence

ON

If one angle in a triangle is 35, and another angle is 75, what is the value of the third angle?

Mathematical Equivalence

ON

If one angle in a triangle is 41, and another angle is 82, what is the value of the third angle?

Mathematical Equivalence

OFF

If one angle in a triangle is 58, and another angle is 64, what is the value of the third angle?

Mathematical Equivalence

OFF